December weather forecast and climate
Bangor, ME

The neon-lit city of Bangor, Maine, at night with the clear sky and neon lights reflected in the water below
The neon-lit city of Bangor, Maine, at night with the clear sky and neon lights reflected in the water below
The first month of the winter, December, is also a wintry month in Bangor, Maine, with average temperature varying between 21.9°F (-5.6°C) and 32.4°F (0.2°C).

Temperature

In Bangor, Maine, the average high-temperature decreases, from a frosty 43.3°F (6.3°C) in November, to a cold 32.4°F (0.2°C). In December, in Bangor, Maine, the average low-temperature is 21.9°F (-5.6°C).

Humidity

The average relative humidity in Bangor is 81%.

Rainfall

December is the month with the most rainfall in Bangor. Rain falls for 11 days and accumulates 3.27" (83mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Bangor, in December, snow falls for 10.3 days, with typically accumulated 5.75" (146mm) of snow. Throughout the year, in Bangor, there are 58 snowfall days, and 34.09" (866mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Bangor, with an average of 8.9h of daylight.

Sunshine

In December, the average sunshine is 4.4h.

UV index

Months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Bangor?

In December, the average high-temperature is 32.4°F (0.2°C), and the average low-temperature is 21.9°F (-5.6°C).

What is the average humidity in December in Bangor?

In December, the average relative humidity is 81%.

How many days does it rain in December in Bangor?

In Bangor, Maine, in December, during 11 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.

What is the rainiest month in Bangor?

December is the month with the most rainfall in Bangor, Maine. Rain falls for 11 days and accumulates 3.27" (83mm) of precipitation.

How many days does it snow in December in Bangor?

In Bangor, Maine, during December, snow falls for 10.3 days and regularly aggregates up to 5.75" (146mm) of snow.

What is the month with the shortest days in Bangor?

December has the shortest days of the year, with an average of 8.9h of daylight.

How many hours of daylight does Bangor have in December?

In Bangor, Maine, the average length of the day in December is 8.9h.

How long on average sun shines in December in Bangor?

The average sunshine in December in Bangor is 4.4h.

What is the month with the lowest UV index in Bangor?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Bangor.

What is the UV index reading in December in Bangor?

In December, the average daily maximum UV index in Bangor, Maine, is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.
Average temperature in December - Bangor, ME
  • Average high temperature in December: 32.4°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in December: 21.9°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in December - Bangor, ME
  • Average pressure in December: 30"

The month with the highest atmospheric pressure is September (30.04").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed in December - Bangor, ME
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December - Bangor, ME
  • Average humidity in December: 81%

The month with the highest relative humidity is February (85%).
Months with the lowest relative humidity are April and May (77%).

Average rainfall in December - Bangor, ME
  • Average rainfall in December: 3.27"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.61").

Average rainfall days in December - Bangor, ME
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in December - Bangor, ME
  • Average snowfall in December: 5.75"

The month with the highest snowfall is January (8.43").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Bangor, ME
  • Average snowfall days in December: 10.3 days

The month with the highest number of snowfall days is February (13.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Bangor, ME
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 4.4h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 4h).

Average sunshine days in December - Bangor, ME
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is April (10.3 days).

Average UV index in December - Bangor, ME
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December - Bangor, ME
  • Average cloud cover in December: 52

Months with the most cloud cover are February and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in December - Bangor, ME
  • Average visibility in December: 6mi

Months with the highest visibility are October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August and September (5mi).